Memory and Disk Space Requirements#
The table below lists memory requirements for benchmarks run with the default settings (standard mode) and with the user-defined settings (optional mode). In this table:
Q is the number of active processes.
X is the maximal size of the passing message.
Benchmarks |
Standard Mode |
Optional Mode |
---|---|---|
|
Q*8 MB |
Q*2X bytes |
|
(Q+1)*4 MB |
(Q+1)*X bytes |
|
12 MB |
3X bytes |
All other MPI-1benchmarks |
8 MB |
2X bytes |
|
80 MB |
2
max |
|
32 MB |
3X bytes |
|
Q*8 MB |
Q*2X bytes |
|
(Q+1)*4 MB |
(Q+1)*X bytes |
All other |
8 MB |
2X bytes |
|
12 B |
12 B |
|
16 MB |
4X bytes |
All other |
8 MB |
2X bytes |
Note
If you do not select the -cache
flag, add 2X cache size to all of
the above.
For IMB-IO
benchmarks, make sure you have enough disk space
available:
16MB in the standard mode
max
(X,OVERALL_VOL)
bytes in the optional mode
For instructions on enabling the optional mode, see Parameters Controlling Intel(R) MPI Benchmarks.